DC Inverter Multi
VRF Service Manual
139
Dial-up Value
The dial-up value of address code is set in binary system. The dial-up value is “0” when the lever is dialed to “ON”
end; the dial-up is “1” when the lever is dialed to numerical end on opposite side. For number 4~1 on the address code, the
dial-up #4 refers to high bit and the dial-up 1# refers to low bit.
Dial-up Table (4-bit Dial-up Switch)
4-bit 3-bit 2-bit 1-bit Address
0 0 0 0 1
0 0 0 1 2
0 0 1 0 3
0 0 1 1 4
0 1 0 0 5
0 1 0 1 6
0 1 1 0 7
0 1 1 1 8
1 0 0 0 9
1 0 0 1 10
1 0 1 0 11
1 0 1 1 12
1 1 0 0 13
1 1 0 1 14
1 1 1 0 15
1 1 1 1 16
Example 1: If the dial value is “0111”, this represents that the serial number is “8”, the pins 1, 2 & 3 of the dial
switch are dialed to the opposite end of “ON”, and the pin 4 is dialed to “ON”.
Example 2: If the dial value is “1010”, this represents that the address is “11”, the pins 2 & 4 of the dial switch are
dialed to the numerical end, and the pin 1 & 3 are dialed to “ON”.
Refer to the following gure.
Address 8, dial-up value 0111 Address 8, dial-up value 1010
7.4.3 Capacity Code
On the mainboard of indoor unit, two 4-bit DIP switches are used to distribute the address and capacity of indoor
units. The 4-bit DIP switch (marked with “capacity” below) used for setting the capacity of indoor units is factory set
before shipment of indoor unit, while it is covered by sealant, so that it cannot be changed by the user.
Below is factory default setting:
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